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` Thll Coupling.

No. 80,262. PatentedV July 21, 1868.

PETERS, Photo-lithognphsr, Wzshnglon D C H, B. WILLGOX, OF PHILADELPHIA, PENNSYLVANIA.

Letras Patent NQ. 80,262, lated .ma 21,1868.

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IMPROVEMENT IN CARRIAGE-THILL COUPLING.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, II. B. WILLooX, of Philadelphia, State of Pennsylvania, have invented an Improved Carriage-Thill; and I do hereby declarethe following to be a. full, clear, and exact description of the same.

My invention relates to a peculiar thill, fully described hereafter, for coupling the shafts or p'ole of carriages or other conveyances to the axles, the .thill being such as to admit of ready coupling and Vuncoupling of the shafts, and also such as to prevent disagreeable rattling.

In order to enable others skilled in the art` to make and use my invention, I will now proceed todescribe: its construction and operation, reference being had to the accompanying drawing, which fo'rms a part of this specification, and in which- Figure 1 is a side view, partly in section, of my improved carriage-thin, showing the two partsas they appear when being connected together.

Figure 2, the same, with the shaft depressed' and the connection complete.

Figure 3 a plan view, and

Figure 4 a. modication of my invention,

Similar letters refer to similar parts throughout the several views. i I

`The usual bent bar A is secured to each of the shafts of a carriage, and from one side of. theenlarged end a of this barprojects a pin, b, with'opposite attened sides and rounded edges, as shown inthe drawing. i'

A metal block, B, is secured to the axle of the carriage, or to the clip C of the same, and in this block is formed a circular opening, d, adapted to the reception of the pin b, the latter being introduced into this opening through a narrow, inclined passage,.e, Yin the upper portion of the block, as shown in g. 1.

In the block at the rear portion of theopening d is a' recess, x, for'the receptionof a small solid slab of r i gtta percha or rubber, f, a 'portion of'whichprojects into the said opening, the projecting portion being covered b va metal apron, g, which is curvedi to conform to the shape of the opening, and is hinged to 'the block by a pin, L, asfshown in figs. 1 and 2. i i

When it isdesired to connect the shafts to the axle, th'ey are elevated to such a positionthat the pins b are directly over and in line with the passages e leading to the openings `into which the pins are pushed. The shafts are then depressed until the pins assume the position shown inig. l2. In thus turning downth shafts, the pins b are caused to bear against .the fron't portiona of .the block, and to force backwards 'the curved apron g, the latter bearing against and compressing the wholebody of thegutta-percha spri'ngf.

The opening dis covered and protected from dust by alcather ap, k, on the top of the bloclrB, and byza disk, i', fig. 3, which is secured to the end of-or forms a part of the pin b.

The modification of my invention shown in iig. 4, represents a deviceto be used in connection-with heavy shafts or with a single pole. In this case the same coupling-block B is employed, but the end of the shaftbr pole is forked so as to embrace' the block, the pin b fitting-into the latter in the mannerabove described, an'd connecting'the opposite forked ends of the shaftorpole, as shown by. dotted lines. Y

It will be apparent that much less rubber islrcquired when it is confined as above described, than when a block is merely interposed between the end of the arm A and the coupling-piece, andthat owngto the arrangement of the block of rubber in relation to the openings d and e, and to the use of` vanfoblong pin,`b, on the arrn A, the pressure of the rubber upon the pin is not exerted until the shafts are nearly in a. horizontal'position, so that the shafts may be readily disconnected and replaced without the necessity of detaehing the rubber.

I claim as my invention, and desire to secure by Letters Patentl 1. The block B, witlrits recesses d, e, and x, andthe blockyl of rubber, fitting the recess :11, in combination with the bar A; and its projection b, substantially as and for the purpose described. i

2. 'lhe combination of the above, the flap lc, and disk z", substantially as and for the purpose specified.

In testimony whereof, I havcsigned my naine'to this specification, inthe presence of two subscribing witnesses.

i n. B. WILLooX.

YYrtncsses;

JOHN Wnlrr, 'll'. J. R. Dumm. 

